Elevating-truck.



No. 763,027. PATENTED JUNE 21, 1904. A. A. SCOTT.

ELEVATING TRUCK.

APPLICATION FILED AUG. 12. T903.

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transfer-truck or somewhere intermediate the UNITED STATES Patented June 21, 1904.

PATENT OFFICE.

ELEVATlNG-TRUCK.

SPECIFICATION forming part of LettersPatent No. 763,027, dated June 21, 1904.

Application filed August 12, 1903.

To all whom it may concern:

Be it known that I, ALEXANDER ANDERSON Soo'r'r, a citizen of the United States, residing at Knoxville, in the county of Knox and State of Tennessee, have invented certain new and useful Improvements in Elevating-Trucks, of which the following is a specification.

My invention relates to trucks for transporting and elevating and lowering heavy loads, such as pallets of bricks in a brick-yard, and has for its object to improve the construction of a truck patented to me on April 9, 1901, No. 671,452. In the truck described in said patent the elevating-platform is raised and lowered by means of a lever-like handle. This construction necessitates backing the car into the drying-yard and into the rack at the machine, so that unless the machine is on the same side of a transfer-track as the dryingyard a turn-table must be provided on the machine-rack and the drying-racks, so that -the truck may be in the right position.

with threaded sockets on the front of the" truck and on the elevating means for the platform.

The construction and advantages of my invention will fully appear hereinafter and by reference to the accompanying drawings, in

Serial No. 169,277. (No model.)

-' rights 0 at the front and back of each basebeam.

D represents the platform-beams, having their ends slidably mounted in the uprights C and raised and lowered by two 01" more toggle-levers E, having their ends pivotally mounted on the base-beams A and platformbeams D and their joints connected by a rod F.

G represents a short bar pivotally mounted on the end of each rod F and H, a cross-bar connecting the free ends of bars G.

I represents a screw-threaded socket secured to cross-bar H by means of bolts J,

passing through ears 2', integral with said socket I and said cross-bar H.

K represents a cross-bar secured to the uprights C on the front of the truck and having a screw-threaded bore in therein, the threads in said bore A". being in the opposite direction to the threads in socket I. On the uprights C, at the rear of the truck, is secured a crossbar L having a smooth bore Z therein.

M represents a shaft journaled in bore Z and having right and left threads m to intermember with the threads in socket I and bore 7c, respectively.

. N represents a wheel keyed to each end of shaftM and having a handle mounted on its rim or one of its spokes to turn it, or a crank may be substituted for the wheel N, if desired.

In operation the platform-beams are raised by turning the shaft M in one direction, it being readily apparent that by having the threads thereon right and left and the threaded sockets cut to in-termember therewith the platform is moved twice as rapidly as it would be with all the threads in the same direction. It is also apparent that the shaft can be operated from either end of the truck, so that the truck need not be turned around in operation.

It will also be readily seen that by slight modifications my invention may be applied to other forms of elevating-trucks and especially to those issued to me on July 2, 1902, No. 703,744, September 16, 1902, No. 709,245, and October 14, 1902, Nos. 711,007 and 711,008, and I therefore do not wish to be confined to the application of my means for raising and lowering to a truck having a platform actuated by toggle-levers as described above and 7 shown in the accompanying drawings.

- bars and having a screw-threaded socket therein, and a shaft journaled in said frame having a threaded portion to intermember with the threaded socket aforesaid, substantially as shown and described.

2. In an elevating-truck, a frame, a platform movable relative to said frame, togglelevers pivotally mounted on said frame and platform, rods connecting the joints of said toggle-levers, a bar pivotally mounted on one end of each rod, a cross-bar connecting the free ends of said bars and having a screw-threaded socket therein, a cross-bar secured to the front of the truck having a socket threaded opposite to the threads in the first-mentioned socket, and a shaft journaled at the rear of the truck and having right and left threads cut into its surface to intermember with the threaded sockets aforesaid, substantially as shown and described.

In testimony whereof I hereto aflix my signature in the presence of two witnesses.

ALEXANDER ANDERSON SCOTT. Witnesses:

Jos. H. BLACKWOOD, S. A. RANDOLPH, Jr. 

